I was very glad to have this very effective relief from the unbelievable pain of shingles, but I hear that I shouldn't quit all of a sudden. I've only been taking them for 2 weeks, but my dosage was 2700 mil a day. My doctor has taken vacation and the paper that came with it just said that my doctor would gradually take me down. I've already cut back to 1800 mil and so far so good. I really would like to be over this stuff by the time this script runs out.